CompilerInvocation.cpp revision 3532fdd1db8ff6f353f2a5b215cebe3e0e2ff3c2 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/System/Host.h"
30#include "llvm/System/Path.h"
31using namespace clang;
32
33static const char *getAnalysisName(Analyses Kind) {
34  switch (Kind) {
35  default:
36    llvm_unreachable("Unknown analysis kind!");
37#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
38  case NAME: return "-" CMDFLAG;
39#include "clang/Frontend/Analyses.def"
40  }
41}
42
43static const char *getAnalysisStoreName(AnalysisStores Kind) {
44  switch (Kind) {
45  default:
46    llvm_unreachable("Unknown analysis store!");
47#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
48  case NAME##Model: return CMDFLAG;
49#include "clang/Frontend/Analyses.def"
50  }
51}
52
53static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
54  switch (Kind) {
55  default:
56    llvm_unreachable("Unknown analysis constraints!");
57#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
58  case NAME##Model: return CMDFLAG;
59#include "clang/Frontend/Analyses.def"
60  }
61}
62
63static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
64  switch (Kind) {
65  default:
66    llvm_unreachable("Unknown analysis client!");
67#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
68  case PD_##NAME: return CMDFLAG;
69#include "clang/Frontend/Analyses.def"
70  }
71}
72
73//===----------------------------------------------------------------------===//
74// Serialization (to args)
75//===----------------------------------------------------------------------===//
76
77static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
78                               std::vector<std::string> &Res) {
79  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
80    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
81  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
82    Res.push_back("-analyzer-store");
83    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
84  }
85  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
86    Res.push_back("-analyzer-constraints");
87    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
88  }
89  if (Opts.AnalysisDiagOpt != PD_HTML) {
90    Res.push_back("-analyzer-output");
91    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
92  }
93  if (!Opts.AnalyzeSpecificFunction.empty()) {
94    Res.push_back("-analyze-function");
95    Res.push_back(Opts.AnalyzeSpecificFunction);
96  }
97  if (Opts.AnalyzeAll)
98    Res.push_back("-analyzer-opt-analyze-headers");
99  if (Opts.AnalyzerDisplayProgress)
100    Res.push_back("-analyzer-display-progress");
101  if (Opts.AnalyzeNestedBlocks)
102    Res.push_back("-analyzer-opt-analyze-nested-blocks");
103  if (Opts.AnalyzerStats)
104    Res.push_back("-analyzer-stats");
105  if (Opts.EagerlyAssume)
106    Res.push_back("-analyzer-eagerly-assume");
107  if (!Opts.PurgeDead)
108    Res.push_back("-analyzer-no-purge-dead");
109  if (Opts.TrimGraph)
110    Res.push_back("-trim-egraph");
111  if (Opts.VisualizeEGDot)
112    Res.push_back("-analyzer-viz-egraph-graphviz");
113  if (Opts.VisualizeEGDot)
114    Res.push_back("-analyzer-viz-egraph-ubigraph");
115  if (Opts.EnableExperimentalChecks)
116    Res.push_back("-analyzer-experimental-checks");
117  if (Opts.EnableExperimentalInternalChecks)
118    Res.push_back("-analyzer-experimental-internal-checks");
119  if (Opts.IdempotentOps)
120      Res.push_back("-analyzer-check-idempotent-operations");
121}
122
123static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
124                              std::vector<std::string> &Res) {
125  if (Opts.DebugInfo)
126    Res.push_back("-g");
127  if (Opts.DisableLLVMOpts)
128    Res.push_back("-disable-llvm-optzns");
129  if (Opts.DisableRedZone)
130    Res.push_back("-disable-red-zone");
131  if (!Opts.DwarfDebugFlags.empty()) {
132    Res.push_back("-dwarf-debug-flags");
133    Res.push_back(Opts.DwarfDebugFlags);
134  }
135  if (!Opts.MergeAllConstants)
136    Res.push_back("-fno-merge-all-constants");
137  if (Opts.NoCommon)
138    Res.push_back("-fno-common");
139  if (Opts.NoImplicitFloat)
140    Res.push_back("-no-implicit-float");
141  if (Opts.OmitLeafFramePointer)
142    Res.push_back("-momit-leaf-frame-pointer");
143  if (Opts.OptimizeSize) {
144    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
145    Res.push_back("-Os");
146  } else if (Opts.OptimizationLevel != 0)
147    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
148  if (!Opts.MainFileName.empty()) {
149    Res.push_back("-main-file-name");
150    Res.push_back(Opts.MainFileName);
151  }
152  // SimplifyLibCalls is only derived.
153  // TimePasses is only derived.
154  // UnitAtATime is unused.
155  // Inlining is only derived.
156
157  // UnrollLoops is derived, but also accepts an option, no
158  // harm in pushing it back here.
159  if (Opts.UnrollLoops)
160    Res.push_back("-funroll-loops");
161  if (Opts.DataSections)
162    Res.push_back("-fdata-sections");
163  if (Opts.FunctionSections)
164    Res.push_back("-ffunction-sections");
165  if (Opts.AsmVerbose)
166    Res.push_back("-masm-verbose");
167  if (!Opts.CodeModel.empty()) {
168    Res.push_back("-mcode-model");
169    Res.push_back(Opts.CodeModel);
170  }
171  if (!Opts.CXAAtExit)
172    Res.push_back("-fno-use-cxa-atexit");
173  if (Opts.CXXCtorDtorAliases)
174    Res.push_back("-mconstructor-aliases");
175  if (!Opts.DebugPass.empty()) {
176    Res.push_back("-mdebug-pass");
177    Res.push_back(Opts.DebugPass);
178  }
179  if (Opts.DisableFPElim)
180    Res.push_back("-mdisable-fp-elim");
181  if (!Opts.FloatABI.empty()) {
182    Res.push_back("-mfloat-abi");
183    Res.push_back(Opts.FloatABI);
184  }
185  if (!Opts.LimitFloatPrecision.empty()) {
186    Res.push_back("-mlimit-float-precision");
187    Res.push_back(Opts.LimitFloatPrecision);
188  }
189  if (Opts.NoZeroInitializedInBSS)
190    Res.push_back("-mno-zero-initialized-bss");
191  switch (Opts.getObjCDispatchMethod()) {
192  case CodeGenOptions::Legacy:
193    break;
194  case CodeGenOptions::Mixed:
195    Res.push_back("-fobjc-dispatch-method=mixed");
196    break;
197  case CodeGenOptions::NonLegacy:
198    Res.push_back("-fobjc-dispatch-method=non-legacy");
199    break;
200  }
201  if (Opts.RelaxAll)
202    Res.push_back("-mrelax-all");
203  if (Opts.SoftFloat)
204    Res.push_back("-msoft-float");
205  if (Opts.UnwindTables)
206    Res.push_back("-munwind-tables");
207  if (Opts.RelocationModel != "pic") {
208    Res.push_back("-mrelocation-model");
209    Res.push_back(Opts.RelocationModel);
210  }
211  if (!Opts.VerifyModule)
212    Res.push_back("-disable-llvm-verifier");
213}
214
215static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
216                                       std::vector<std::string> &Res) {
217  if (Opts.IncludeSystemHeaders)
218    Res.push_back("-sys-header-deps");
219  if (Opts.UsePhonyTargets)
220    Res.push_back("-MP");
221  if (!Opts.OutputFile.empty()) {
222    Res.push_back("-dependency-file");
223    Res.push_back(Opts.OutputFile);
224  }
225  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
226    Res.push_back("-MT");
227    Res.push_back(Opts.Targets[i]);
228  }
229}
230
231static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
232                                 std::vector<std::string> &Res) {
233  if (Opts.IgnoreWarnings)
234    Res.push_back("-w");
235  if (Opts.NoRewriteMacros)
236    Res.push_back("-Wno-rewrite-macros");
237  if (Opts.Pedantic)
238    Res.push_back("-pedantic");
239  if (Opts.PedanticErrors)
240    Res.push_back("-pedantic-errors");
241  if (!Opts.ShowColumn)
242    Res.push_back("-fno-show-column");
243  if (!Opts.ShowLocation)
244    Res.push_back("-fno-show-source-location");
245  if (!Opts.ShowCarets)
246    Res.push_back("-fno-caret-diagnostics");
247  if (!Opts.ShowFixits)
248    Res.push_back("-fno-diagnostics-fixit-info");
249  if (Opts.ShowSourceRanges)
250    Res.push_back("-fdiagnostics-print-source-range-info");
251  if (Opts.ShowParseableFixits)
252    Res.push_back("-fdiagnostics-parseable-fixits");
253  if (Opts.ShowColors)
254    Res.push_back("-fcolor-diagnostics");
255  if (Opts.VerifyDiagnostics)
256    Res.push_back("-verify");
257  if (Opts.ShowOptionNames)
258    Res.push_back("-fdiagnostics-show-option");
259  if (Opts.ShowCategories == 1)
260    Res.push_back("-fdiagnostics-show-category=id");
261  else if (Opts.ShowCategories == 2)
262    Res.push_back("-fdiagnostics-show-category=name");
263  if (Opts.ErrorLimit) {
264    Res.push_back("-ferror-limit");
265    Res.push_back(llvm::utostr(Opts.ErrorLimit));
266  }
267  if (Opts.MacroBacktraceLimit
268                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
269    Res.push_back("-fmacro-backtrace-limit");
270    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
271  }
272  if (Opts.TemplateBacktraceLimit
273                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
274    Res.push_back("-ftemplate-backtrace-limit");
275    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
276  }
277
278  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
279    Res.push_back("-ftabstop");
280    Res.push_back(llvm::utostr(Opts.TabStop));
281  }
282  if (Opts.MessageLength) {
283    Res.push_back("-fmessage-length");
284    Res.push_back(llvm::utostr(Opts.MessageLength));
285  }
286  if (!Opts.DumpBuildInformation.empty()) {
287    Res.push_back("-dump-build-information");
288    Res.push_back(Opts.DumpBuildInformation);
289  }
290  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
291    Res.push_back("-W" + Opts.Warnings[i]);
292}
293
294static const char *getInputKindName(InputKind Kind) {
295  switch (Kind) {
296  case IK_None:              break;
297  case IK_AST:               return "ast";
298  case IK_Asm:               return "assembler-with-cpp";
299  case IK_C:                 return "c";
300  case IK_CXX:               return "c++";
301  case IK_LLVM_IR:           return "ir";
302  case IK_ObjC:              return "objective-c";
303  case IK_ObjCXX:            return "objective-c++";
304  case IK_OpenCL:            return "cl";
305  case IK_PreprocessedC:     return "cpp-output";
306  case IK_PreprocessedCXX:   return "c++-cpp-output";
307  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
308  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
309  }
310
311  llvm_unreachable("Unexpected language kind!");
312  return 0;
313}
314
315static const char *getActionName(frontend::ActionKind Kind) {
316  switch (Kind) {
317  case frontend::PluginAction:
318  case frontend::InheritanceView:
319    llvm_unreachable("Invalid kind!");
320
321  case frontend::ASTDump:                return "-ast-dump";
322  case frontend::ASTPrint:               return "-ast-print";
323  case frontend::ASTPrintXML:            return "-ast-print-xml";
324  case frontend::ASTView:                return "-ast-view";
325  case frontend::BoostCon:               return "-boostcon";
326  case frontend::CreateModule:           return "-create-module";
327  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
328  case frontend::DumpTokens:             return "-dump-tokens";
329  case frontend::EmitAssembly:           return "-S";
330  case frontend::EmitBC:                 return "-emit-llvm-bc";
331  case frontend::EmitHTML:               return "-emit-html";
332  case frontend::EmitLLVM:               return "-emit-llvm";
333  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
334  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
335  case frontend::EmitObj:                return "-emit-obj";
336  case frontend::FixIt:                  return "-fixit";
337  case frontend::GeneratePCH:            return "-emit-pch";
338  case frontend::GeneratePTH:            return "-emit-pth";
339  case frontend::InitOnly:               return "-init-only";
340  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
341  case frontend::PrintDeclContext:       return "-print-decl-contexts";
342  case frontend::PrintPreamble:          return "-print-preamble";
343  case frontend::PrintPreprocessedInput: return "-E";
344  case frontend::RewriteMacros:          return "-rewrite-macros";
345  case frontend::RewriteObjC:            return "-rewrite-objc";
346  case frontend::RewriteTest:            return "-rewrite-test";
347  case frontend::RunAnalysis:            return "-analyze";
348  case frontend::RunPreprocessorOnly:    return "-Eonly";
349  }
350
351  llvm_unreachable("Unexpected language kind!");
352  return 0;
353}
354
355static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
356                                 std::vector<std::string> &Res) {
357  if (!Opts.WorkingDir.empty()) {
358    Res.push_back("-working-directory");
359    Res.push_back(Opts.WorkingDir);
360  }
361}
362
363static void FrontendOptsToArgs(const FrontendOptions &Opts,
364                               std::vector<std::string> &Res) {
365  if (Opts.DisableFree)
366    Res.push_back("-disable-free");
367  if (Opts.RelocatablePCH)
368    Res.push_back("-relocatable-pch");
369  if (Opts.ChainedPCH)
370    Res.push_back("-chained-pch");
371  if (Opts.ShowHelp)
372    Res.push_back("-help");
373  if (Opts.ShowMacrosInCodeCompletion)
374    Res.push_back("-code-completion-macros");
375  if (Opts.ShowCodePatternsInCodeCompletion)
376    Res.push_back("-code-completion-patterns");
377  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
378    Res.push_back("-no-code-completion-globals");
379  if (Opts.ShowStats)
380    Res.push_back("-print-stats");
381  if (Opts.ShowTimers)
382    Res.push_back("-ftime-report");
383  if (Opts.ShowVersion)
384    Res.push_back("-version");
385  if (Opts.FixWhatYouCan)
386    Res.push_back("-fix-what-you-can");
387
388  bool NeedLang = false;
389  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
390    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
391        Opts.Inputs[i].first)
392      NeedLang = true;
393  if (NeedLang) {
394    Res.push_back("-x");
395    Res.push_back(getInputKindName(Opts.Inputs[0].first));
396  }
397  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
398    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
399           "Unable to represent this input vector!");
400    Res.push_back(Opts.Inputs[i].second);
401  }
402
403  if (!Opts.OutputFile.empty()) {
404    Res.push_back("-o");
405    Res.push_back(Opts.OutputFile);
406  }
407  if (!Opts.ViewClassInheritance.empty()) {
408    Res.push_back("-cxx-inheritance-view");
409    Res.push_back(Opts.ViewClassInheritance);
410  }
411  if (!Opts.CodeCompletionAt.FileName.empty()) {
412    Res.push_back("-code-completion-at");
413    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
414                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
415                  llvm::utostr(Opts.CodeCompletionAt.Column));
416  }
417  if (Opts.ProgramAction != frontend::InheritanceView &&
418      Opts.ProgramAction != frontend::PluginAction)
419    Res.push_back(getActionName(Opts.ProgramAction));
420  if (!Opts.ActionName.empty()) {
421    Res.push_back("-plugin");
422    Res.push_back(Opts.ActionName);
423    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
424      Res.push_back("-plugin-arg-" + Opts.ActionName);
425      Res.push_back(Opts.PluginArgs[i]);
426    }
427  }
428  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
429    Res.push_back("-load");
430    Res.push_back(Opts.Plugins[i]);
431  }
432  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
433    Res.push_back("-ast-merge");
434    Res.push_back(Opts.ASTMergeFiles[i]);
435  }
436  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
437    Res.push_back("-import-module");
438    Res.push_back(Opts.Modules[i]);
439  }
440  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
441    Res.push_back("-mllvm");
442    Res.push_back(Opts.LLVMArgs[i]);
443  }
444}
445
446static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
447                                   std::vector<std::string> &Res) {
448  if (Opts.Sysroot != "/") {
449    Res.push_back("-isysroot");
450    Res.push_back(Opts.Sysroot);
451  }
452
453  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
454    Res.push_back("-cxx-system-include");
455    Res.push_back(Opts.CXXSystemIncludes[i]);
456  }
457
458  /// User specified include entries.
459  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
460    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
461    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
462      llvm::report_fatal_error("Invalid option set!");
463    if (E.IsUserSupplied) {
464      if (E.Group == frontend::After) {
465        Res.push_back("-idirafter");
466      } else if (E.Group == frontend::Quoted) {
467        Res.push_back("-iquote");
468      } else if (E.Group == frontend::System) {
469        Res.push_back("-isystem");
470      } else {
471        assert(E.Group == frontend::Angled && "Invalid group!");
472        Res.push_back(E.IsFramework ? "-F" : "-I");
473      }
474    } else {
475      if (E.Group != frontend::Angled && E.Group != frontend::System)
476        llvm::report_fatal_error("Invalid option set!");
477      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
478                    "-iwithprefix");
479    }
480    Res.push_back(E.Path);
481  }
482
483  if (!Opts.EnvIncPath.empty()) {
484    // FIXME: Provide an option for this, and move env detection to driver.
485    llvm::report_fatal_error("Not yet implemented!");
486  }
487  if (!Opts.CEnvIncPath.empty()) {
488    // FIXME: Provide an option for this, and move env detection to driver.
489    llvm::report_fatal_error("Not yet implemented!");
490  }
491  if (!Opts.ObjCEnvIncPath.empty()) {
492    // FIXME: Provide an option for this, and move env detection to driver.
493    llvm::report_fatal_error("Not yet implemented!");
494  }
495  if (!Opts.CXXEnvIncPath.empty()) {
496    // FIXME: Provide an option for this, and move env detection to driver.
497    llvm::report_fatal_error("Not yet implemented!");
498  }
499  if (!Opts.ObjCXXEnvIncPath.empty()) {
500    // FIXME: Provide an option for this, and move env detection to driver.
501    llvm::report_fatal_error("Not yet implemented!");
502  }
503  if (!Opts.ResourceDir.empty()) {
504    Res.push_back("-resource-dir");
505    Res.push_back(Opts.ResourceDir);
506  }
507  if (!Opts.UseStandardIncludes)
508    Res.push_back("-nostdinc");
509  if (!Opts.UseStandardCXXIncludes)
510    Res.push_back("-nostdinc++");
511  if (Opts.Verbose)
512    Res.push_back("-v");
513}
514
515static void LangOptsToArgs(const LangOptions &Opts,
516                           std::vector<std::string> &Res) {
517  LangOptions DefaultLangOpts;
518
519  // FIXME: Need to set -std to get all the implicit options.
520
521  // FIXME: We want to only pass options relative to the defaults, which
522  // requires constructing a target. :(
523  //
524  // It would be better to push the all target specific choices into the driver,
525  // so that everything below that was more uniform.
526
527  if (Opts.Trigraphs)
528    Res.push_back("-trigraphs");
529  // Implicit based on the input kind:
530  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
531  // Implicit based on the input language standard:
532  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
533  if (Opts.DollarIdents)
534    Res.push_back("-fdollars-in-identifiers");
535  if (Opts.GNUMode && !Opts.GNUKeywords)
536    Res.push_back("-fno-gnu-keywords");
537  if (!Opts.GNUMode && Opts.GNUKeywords)
538    Res.push_back("-fgnu-keywords");
539  if (Opts.Microsoft)
540    Res.push_back("-fms-extensions");
541  if (Opts.MSCVersion != 0)
542    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
543  if (Opts.Borland)
544    Res.push_back("-fborland-extensions");
545  if (Opts.ObjCNonFragileABI)
546    Res.push_back("-fobjc-nonfragile-abi");
547  if (Opts.ObjCNonFragileABI2)
548    Res.push_back("-fobjc-nonfragile-abi2");
549  // NoInline is implicit.
550  if (!Opts.CXXOperatorNames)
551    Res.push_back("-fno-operator-names");
552  if (Opts.PascalStrings)
553    Res.push_back("-fpascal-strings");
554  if (Opts.CatchUndefined)
555    Res.push_back("-fcatch-undefined-behavior");
556  if (Opts.WritableStrings)
557    Res.push_back("-fwritable-strings");
558  if (Opts.ConstStrings)
559    Res.push_back("-Wwrite-strings");
560  if (!Opts.LaxVectorConversions)
561    Res.push_back("-fno-lax-vector-conversions");
562  if (Opts.AltiVec)
563    Res.push_back("-faltivec");
564  if (Opts.Exceptions)
565    Res.push_back("-fexceptions");
566  if (Opts.SjLjExceptions)
567    Res.push_back("-fsjlj-exceptions");
568  if (!Opts.RTTI)
569    Res.push_back("-fno-rtti");
570  if (!Opts.NeXTRuntime)
571    Res.push_back("-fgnu-runtime");
572  if (Opts.Freestanding)
573    Res.push_back("-ffreestanding");
574  if (Opts.NoBuiltin)
575    Res.push_back("-fno-builtin");
576  if (!Opts.AssumeSaneOperatorNew)
577    Res.push_back("-fno-assume-sane-operator-new");
578  if (!Opts.ThreadsafeStatics)
579    Res.push_back("-fno-threadsafe-statics");
580  if (Opts.POSIXThreads)
581    Res.push_back("-pthread");
582  if (Opts.Blocks)
583    Res.push_back("-fblocks");
584  if (Opts.EmitAllDecls)
585    Res.push_back("-femit-all-decls");
586  if (Opts.MathErrno)
587    Res.push_back("-fmath-errno");
588  switch (Opts.getSignedOverflowBehavior()) {
589  case LangOptions::SOB_Undefined: break;
590  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
591  case LangOptions::SOB_Trapping:
592    Res.push_back("-ftrapv"); break;
593    if (!Opts.OverflowHandler.empty()) {
594      Res.push_back("-ftrapv-handler");
595      Res.push_back(Opts.OverflowHandler);
596    }
597  }
598  if (Opts.HeinousExtensions)
599    Res.push_back("-fheinous-gnu-extensions");
600  // Optimize is implicit.
601  // OptimizeSize is implicit.
602  if (Opts.Static)
603    Res.push_back("-static-define");
604  if (Opts.DumpRecordLayouts)
605    Res.push_back("-fdump-record-layouts");
606  if (Opts.DumpVTableLayouts)
607    Res.push_back("-fdump-vtable-layouts");
608  if (Opts.NoBitFieldTypeAlign)
609    Res.push_back("-fno-bitfield-type-alignment");
610  if (Opts.SjLjExceptions)
611    Res.push_back("-fsjlj-exceptions");
612  if (Opts.PICLevel) {
613    Res.push_back("-pic-level");
614    Res.push_back(llvm::utostr(Opts.PICLevel));
615  }
616  if (Opts.ObjCGCBitmapPrint)
617    Res.push_back("-print-ivar-layout");
618  if (Opts.NoConstantCFStrings)
619    Res.push_back("-fno-constant-cfstrings");
620  if (!Opts.AccessControl)
621    Res.push_back("-fno-access-control");
622  if (!Opts.CharIsSigned)
623    Res.push_back("-fno-signed-char");
624  if (Opts.ShortWChar)
625    Res.push_back("-fshort-wchar");
626  if (!Opts.ElideConstructors)
627    Res.push_back("-fno-elide-constructors");
628  if (Opts.getGCMode() != LangOptions::NonGC) {
629    if (Opts.getGCMode() == LangOptions::HybridGC) {
630      Res.push_back("-fobjc-gc");
631    } else {
632      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
633      Res.push_back("-fobjc-gc-only");
634    }
635  }
636  if (Opts.getVisibilityMode() != DefaultVisibility) {
637    Res.push_back("-fvisibility");
638    if (Opts.getVisibilityMode() == HiddenVisibility) {
639      Res.push_back("hidden");
640    } else {
641      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
642             "Invalid visibility!");
643      Res.push_back("protected");
644    }
645  }
646  if (Opts.InlineVisibilityHidden)
647    Res.push_back("-fvisibility-inlines-hidden");
648
649  if (Opts.getStackProtectorMode() != 0) {
650    Res.push_back("-stack-protector");
651    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
652  }
653  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
654    Res.push_back("-ftemplate-depth");
655    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
656  }
657  if (!Opts.ObjCConstantStringClass.empty()) {
658    Res.push_back("-fconstant-string-class");
659    Res.push_back(Opts.ObjCConstantStringClass);
660  }
661}
662
663static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
664                                   std::vector<std::string> &Res) {
665  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
666    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
667                  Opts.Macros[i].first);
668  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
669    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
670    Res.push_back("-include");
671    Res.push_back(Opts.Includes[i]);
672  }
673  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
674    Res.push_back("-imacros");
675    Res.push_back(Opts.MacroIncludes[i]);
676  }
677  if (!Opts.UsePredefines)
678    Res.push_back("-undef");
679  if (Opts.DetailedRecord)
680    Res.push_back("-detailed-preprocessing-record");
681  if (!Opts.ImplicitPCHInclude.empty()) {
682    Res.push_back("-include-pch");
683    Res.push_back(Opts.ImplicitPCHInclude);
684  }
685  if (!Opts.ImplicitPTHInclude.empty()) {
686    Res.push_back("-include-pth");
687    Res.push_back(Opts.ImplicitPTHInclude);
688  }
689  if (!Opts.TokenCache.empty()) {
690    if (Opts.ImplicitPTHInclude.empty()) {
691      Res.push_back("-token-cache");
692      Res.push_back(Opts.TokenCache);
693    } else
694      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
695             "Unsupported option combination!");
696  }
697  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
698    Res.push_back("-remap-file");
699    Res.push_back(Opts.RemappedFiles[i].first + ";" +
700                  Opts.RemappedFiles[i].second);
701  }
702}
703
704static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
705                                         std::vector<std::string> &Res) {
706  if (!Opts.ShowCPP && !Opts.ShowMacros)
707    llvm::report_fatal_error("Invalid option combination!");
708
709  if (Opts.ShowCPP && Opts.ShowMacros)
710    Res.push_back("-dD");
711  else if (!Opts.ShowCPP && Opts.ShowMacros)
712    Res.push_back("-dM");
713
714  if (Opts.ShowHeaderIncludes)
715    Res.push_back("-H");
716  if (!Opts.ShowLineMarkers)
717    Res.push_back("-P");
718  if (Opts.ShowComments)
719    Res.push_back("-C");
720  if (Opts.ShowMacroComments)
721    Res.push_back("-CC");
722}
723
724static void TargetOptsToArgs(const TargetOptions &Opts,
725                             std::vector<std::string> &Res) {
726  Res.push_back("-triple");
727  Res.push_back(Opts.Triple);
728  if (!Opts.CPU.empty()) {
729    Res.push_back("-target-cpu");
730    Res.push_back(Opts.CPU);
731  }
732  if (!Opts.ABI.empty()) {
733    Res.push_back("-target-abi");
734    Res.push_back(Opts.ABI);
735  }
736  if (!Opts.LinkerVersion.empty()) {
737    Res.push_back("-target-linker-version");
738    Res.push_back(Opts.LinkerVersion);
739  }
740  if (!Opts.CXXABI.empty()) {
741    Res.push_back("-cxx-abi");
742    Res.push_back(Opts.CXXABI);
743  }
744  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
745    Res.push_back("-target-feature");
746    Res.push_back(Opts.Features[i]);
747  }
748}
749
750void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
751  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
752  CodeGenOptsToArgs(getCodeGenOpts(), Res);
753  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
754  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
755  FileSystemOptsToArgs(getFileSystemOpts(), Res);
756  FrontendOptsToArgs(getFrontendOpts(), Res);
757  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
758  LangOptsToArgs(getLangOpts(), Res);
759  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
760  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
761  TargetOptsToArgs(getTargetOpts(), Res);
762}
763
764//===----------------------------------------------------------------------===//
765// Deserialization (to args)
766//===----------------------------------------------------------------------===//
767
768using namespace clang::driver;
769using namespace clang::driver::cc1options;
770
771//
772
773static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
774                              Diagnostic &Diags) {
775  using namespace cc1options;
776
777  Opts.AnalysisList.clear();
778#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
779  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
780#include "clang/Frontend/Analyses.def"
781
782  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
783    llvm::StringRef Name = A->getValue(Args);
784    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
785#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
786      .Case(CMDFLAG, NAME##Model)
787#include "clang/Frontend/Analyses.def"
788      .Default(NumStores);
789    // FIXME: Error handling.
790    if (Value == NumStores)
791      Diags.Report(diag::err_drv_invalid_value)
792        << A->getAsString(Args) << Name;
793    else
794      Opts.AnalysisStoreOpt = Value;
795  }
796
797  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
798    llvm::StringRef Name = A->getValue(Args);
799    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
800#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
801      .Case(CMDFLAG, NAME##Model)
802#include "clang/Frontend/Analyses.def"
803      .Default(NumConstraints);
804    // FIXME: Error handling.
805    if (Value == NumConstraints)
806      Diags.Report(diag::err_drv_invalid_value)
807        << A->getAsString(Args) << Name;
808    else
809      Opts.AnalysisConstraintsOpt = Value;
810  }
811
812  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
813    llvm::StringRef Name = A->getValue(Args);
814    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
815#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
816      .Case(CMDFLAG, PD_##NAME)
817#include "clang/Frontend/Analyses.def"
818      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
819    // FIXME: Error handling.
820    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
821      Diags.Report(diag::err_drv_invalid_value)
822        << A->getAsString(Args) << Name;
823    else
824      Opts.AnalysisDiagOpt = Value;
825  }
826
827  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
828  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
829  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
830  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
831  Opts.AnalyzeNestedBlocks =
832    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
833  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
834  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
835  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
836  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
837  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
838  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
839  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
840  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
841  Opts.EnableExperimentalInternalChecks =
842    Args.hasArg(OPT_analyzer_experimental_internal_checks);
843  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
844  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
845  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
846  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
847  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
848}
849
850static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
851                             Diagnostic &Diags) {
852  using namespace cc1options;
853  // -Os implies -O2
854  if (Args.hasArg(OPT_Os))
855    Opts.OptimizationLevel = 2;
856  else {
857    Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
858    if (Opts.OptimizationLevel > 3) {
859      Diags.Report(diag::err_drv_invalid_value)
860        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
861      Opts.OptimizationLevel = 3;
862    }
863  }
864
865  // We must always run at least the always inlining pass.
866  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
867    : CodeGenOptions::OnlyAlwaysInlining;
868
869  Opts.DebugInfo = Args.hasArg(OPT_g);
870  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
871  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
872  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
873  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
874  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
875  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
876  Opts.NoCommon = Args.hasArg(OPT_fno_common);
877  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
878  Opts.OptimizeSize = Args.hasArg(OPT_Os);
879  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
880                            Args.hasArg(OPT_ffreestanding));
881  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
882                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
883
884  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
885  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
886  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
887  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
888  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
889  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
890  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
891  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
892  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
893  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
894  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
895  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
896  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
897  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
898  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
899
900  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
901  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
902
903  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
904  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
905
906  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
907
908  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
909    llvm::StringRef Name = A->getValue(Args);
910    unsigned Method = llvm::StringSwitch<unsigned>(Name)
911      .Case("legacy", CodeGenOptions::Legacy)
912      .Case("non-legacy", CodeGenOptions::NonLegacy)
913      .Case("mixed", CodeGenOptions::Mixed)
914      .Default(~0U);
915    if (Method == ~0U)
916      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
917    else
918      Opts.ObjCDispatchMethod = Method;
919  }
920}
921
922static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
923                                      ArgList &Args) {
924  using namespace cc1options;
925  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
926  Opts.Targets = Args.getAllArgValues(OPT_MT);
927  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
928  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
929}
930
931static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
932                                Diagnostic &Diags) {
933  using namespace cc1options;
934  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
935  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
936  Opts.Pedantic = Args.hasArg(OPT_pedantic);
937  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
938  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
939  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
940  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
941  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
942  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
943  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
944
945  llvm::StringRef ShowOverloads =
946    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
947  if (ShowOverloads == "best")
948    Opts.ShowOverloads = Diagnostic::Ovl_Best;
949  else if (ShowOverloads == "all")
950    Opts.ShowOverloads = Diagnostic::Ovl_All;
951  else
952    Diags.Report(diag::err_drv_invalid_value)
953      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
954      << ShowOverloads;
955
956  llvm::StringRef ShowCategory =
957    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
958  if (ShowCategory == "none")
959    Opts.ShowCategories = 0;
960  else if (ShowCategory == "id")
961    Opts.ShowCategories = 1;
962  else if (ShowCategory == "name")
963    Opts.ShowCategories = 2;
964  else
965    Diags.Report(diag::err_drv_invalid_value)
966      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
967      << ShowCategory;
968
969  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
970  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
971  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
972  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
973  Opts.MacroBacktraceLimit
974    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
975                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
976  Opts.TemplateBacktraceLimit
977    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
978                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
979                         Diags);
980  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
981                                    DiagnosticOptions::DefaultTabStop, Diags);
982  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
983    Diags.Report(diag::warn_ignoring_ftabstop_value)
984      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
985    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
986  }
987  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
988  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
989  Opts.Warnings = Args.getAllArgValues(OPT_W);
990}
991
992static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
993  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
994}
995
996static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
997                                   Diagnostic &Diags) {
998  using namespace cc1options;
999  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1000  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1001    switch (A->getOption().getID()) {
1002    default:
1003      assert(0 && "Invalid option in group!");
1004    case OPT_ast_dump:
1005      Opts.ProgramAction = frontend::ASTDump; break;
1006    case OPT_ast_print:
1007      Opts.ProgramAction = frontend::ASTPrint; break;
1008    case OPT_ast_print_xml:
1009      Opts.ProgramAction = frontend::ASTPrintXML; break;
1010    case OPT_ast_view:
1011      Opts.ProgramAction = frontend::ASTView; break;
1012    case OPT_boostcon:
1013      Opts.ProgramAction = frontend::BoostCon; break;
1014    case OPT_dump_raw_tokens:
1015      Opts.ProgramAction = frontend::DumpRawTokens; break;
1016    case OPT_dump_tokens:
1017      Opts.ProgramAction = frontend::DumpTokens; break;
1018    case OPT_S:
1019      Opts.ProgramAction = frontend::EmitAssembly; break;
1020    case OPT_emit_llvm_bc:
1021      Opts.ProgramAction = frontend::EmitBC; break;
1022    case OPT_emit_html:
1023      Opts.ProgramAction = frontend::EmitHTML; break;
1024    case OPT_emit_llvm:
1025      Opts.ProgramAction = frontend::EmitLLVM; break;
1026    case OPT_emit_llvm_only:
1027      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1028    case OPT_emit_codegen_only:
1029      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1030    case OPT_emit_obj:
1031      Opts.ProgramAction = frontend::EmitObj; break;
1032    case OPT_fixit_EQ:
1033      Opts.FixItSuffix = A->getValue(Args);
1034      // fall-through!
1035    case OPT_fixit:
1036      Opts.ProgramAction = frontend::FixIt; break;
1037    case OPT_emit_pch:
1038      Opts.ProgramAction = frontend::GeneratePCH; break;
1039    case OPT_emit_pth:
1040      Opts.ProgramAction = frontend::GeneratePTH; break;
1041    case OPT_init_only:
1042      Opts.ProgramAction = frontend::InitOnly; break;
1043    case OPT_fsyntax_only:
1044      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1045    case OPT_print_decl_contexts:
1046      Opts.ProgramAction = frontend::PrintDeclContext; break;
1047    case OPT_print_preamble:
1048      Opts.ProgramAction = frontend::PrintPreamble; break;
1049    case OPT_E:
1050      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1051    case OPT_rewrite_macros:
1052      Opts.ProgramAction = frontend::RewriteMacros; break;
1053    case OPT_rewrite_objc:
1054      Opts.ProgramAction = frontend::RewriteObjC; break;
1055    case OPT_rewrite_test:
1056      Opts.ProgramAction = frontend::RewriteTest; break;
1057    case OPT_analyze:
1058      Opts.ProgramAction = frontend::RunAnalysis; break;
1059    case OPT_Eonly:
1060      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1061    case OPT_create_module:
1062      Opts.ProgramAction = frontend::CreateModule; break;
1063    }
1064  }
1065
1066  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1067    Opts.Plugins.push_back(A->getValue(Args,0));
1068    Opts.ProgramAction = frontend::PluginAction;
1069    Opts.ActionName = A->getValue(Args);
1070
1071    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1072           end = Args.filtered_end(); it != end; ++it) {
1073      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1074        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1075    }
1076  }
1077
1078  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1079    Opts.CodeCompletionAt =
1080      ParsedSourceLocation::FromString(A->getValue(Args));
1081    if (Opts.CodeCompletionAt.FileName.empty())
1082      Diags.Report(diag::err_drv_invalid_value)
1083        << A->getAsString(Args) << A->getValue(Args);
1084  }
1085  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1086
1087  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1088  Opts.Plugins = Args.getAllArgValues(OPT_load);
1089  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1090  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1091  Opts.ShowHelp = Args.hasArg(OPT_help);
1092  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1093  Opts.ShowCodePatternsInCodeCompletion
1094    = Args.hasArg(OPT_code_completion_patterns);
1095  Opts.ShowGlobalSymbolsInCodeCompletion
1096    = !Args.hasArg(OPT_no_code_completion_globals);
1097  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1098  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1099  Opts.ShowVersion = Args.hasArg(OPT_version);
1100  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1101  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1102  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1103  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1104  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1105
1106  InputKind DashX = IK_None;
1107  if (const Arg *A = Args.getLastArg(OPT_x)) {
1108    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1109      .Case("c", IK_C)
1110      .Case("cl", IK_OpenCL)
1111      .Case("c", IK_C)
1112      .Case("cl", IK_OpenCL)
1113      .Case("c++", IK_CXX)
1114      .Case("objective-c", IK_ObjC)
1115      .Case("objective-c++", IK_ObjCXX)
1116      .Case("cpp-output", IK_PreprocessedC)
1117      .Case("assembler-with-cpp", IK_Asm)
1118      .Case("c++-cpp-output", IK_PreprocessedCXX)
1119      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1120      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1121      .Case("c-header", IK_C)
1122      .Case("objective-c-header", IK_ObjC)
1123      .Case("c++-header", IK_CXX)
1124      .Case("objective-c++-header", IK_ObjCXX)
1125      .Case("ast", IK_AST)
1126      .Case("ir", IK_LLVM_IR)
1127      .Default(IK_None);
1128    if (DashX == IK_None)
1129      Diags.Report(diag::err_drv_invalid_value)
1130        << A->getAsString(Args) << A->getValue(Args);
1131  }
1132
1133  // '-' is the default input if none is given.
1134  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1135  Opts.Inputs.clear();
1136  if (Inputs.empty())
1137    Inputs.push_back("-");
1138  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1139    InputKind IK = DashX;
1140    if (IK == IK_None) {
1141      IK = FrontendOptions::getInputKindForExtension(
1142        llvm::StringRef(Inputs[i]).rsplit('.').second);
1143      // FIXME: Remove this hack.
1144      if (i == 0)
1145        DashX = IK;
1146    }
1147    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1148  }
1149
1150  return DashX;
1151}
1152
1153std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1154                                                 void *MainAddr) {
1155  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1156
1157  if (!P.isEmpty()) {
1158    P.eraseComponent();  // Remove /clang from foo/bin/clang
1159    P.eraseComponent();  // Remove /bin   from foo/bin
1160
1161    // Get foo/lib/clang/<version>/include
1162    P.appendComponent("lib");
1163    P.appendComponent("clang");
1164    P.appendComponent(CLANG_VERSION_STRING);
1165  }
1166
1167  return P.str();
1168}
1169
1170static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1171  using namespace cc1options;
1172  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1173  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1174  Opts.Verbose = Args.hasArg(OPT_v);
1175  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1176  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1177  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1178  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1179
1180  // Add -I... and -F... options in order.
1181  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1182         ie = Args.filtered_end(); it != ie; ++it)
1183    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1184                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1185
1186  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1187  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1188  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1189                                             OPT_iwithprefixbefore),
1190         ie = Args.filtered_end(); it != ie; ++it) {
1191    const Arg *A = *it;
1192    if (A->getOption().matches(OPT_iprefix))
1193      Prefix = A->getValue(Args);
1194    else if (A->getOption().matches(OPT_iwithprefix))
1195      Opts.AddPath(Prefix.str() + A->getValue(Args),
1196                   frontend::System, false, false, true);
1197    else
1198      Opts.AddPath(Prefix.str() + A->getValue(Args),
1199                   frontend::Angled, false, false, true);
1200  }
1201
1202  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1203         ie = Args.filtered_end(); it != ie; ++it)
1204    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1205  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1206         ie = Args.filtered_end(); it != ie; ++it)
1207    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1208  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1209         ie = Args.filtered_end(); it != ie; ++it)
1210    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1211                 (*it)->getOption().matches(OPT_iwithsysroot));
1212
1213  // FIXME: Need options for the various environment variables!
1214}
1215
1216static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1217                          Diagnostic &Diags) {
1218  // FIXME: Cleanup per-file based stuff.
1219
1220  // Set some properties which depend soley on the input kind; it would be nice
1221  // to move these to the language standard, and have the driver resolve the
1222  // input kind + language standard.
1223  if (IK == IK_Asm) {
1224    Opts.AsmPreprocessor = 1;
1225  } else if (IK == IK_ObjC ||
1226             IK == IK_ObjCXX ||
1227             IK == IK_PreprocessedObjC ||
1228             IK == IK_PreprocessedObjCXX) {
1229    Opts.ObjC1 = Opts.ObjC2 = 1;
1230  }
1231
1232  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1233  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1234    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1235#define LANGSTANDARD(id, name, desc, features) \
1236      .Case(name, LangStandard::lang_##id)
1237#include "clang/Frontend/LangStandards.def"
1238      .Default(LangStandard::lang_unspecified);
1239    if (LangStd == LangStandard::lang_unspecified)
1240      Diags.Report(diag::err_drv_invalid_value)
1241        << A->getAsString(Args) << A->getValue(Args);
1242  }
1243
1244  if (LangStd == LangStandard::lang_unspecified) {
1245    // Based on the base language, pick one.
1246    switch (IK) {
1247    case IK_None:
1248    case IK_AST:
1249    case IK_LLVM_IR:
1250      assert(0 && "Invalid input kind!");
1251    case IK_OpenCL:
1252      LangStd = LangStandard::lang_opencl;
1253      break;
1254    case IK_Asm:
1255    case IK_C:
1256    case IK_PreprocessedC:
1257    case IK_ObjC:
1258    case IK_PreprocessedObjC:
1259      LangStd = LangStandard::lang_gnu99;
1260      break;
1261    case IK_CXX:
1262    case IK_PreprocessedCXX:
1263    case IK_ObjCXX:
1264    case IK_PreprocessedObjCXX:
1265      LangStd = LangStandard::lang_gnucxx98;
1266      break;
1267    }
1268  }
1269
1270  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1271  Opts.BCPLComment = Std.hasBCPLComments();
1272  Opts.C99 = Std.isC99();
1273  Opts.CPlusPlus = Std.isCPlusPlus();
1274  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1275  Opts.Digraphs = Std.hasDigraphs();
1276  Opts.GNUMode = Std.isGNUMode();
1277  Opts.GNUInline = !Std.isC99();
1278  Opts.HexFloats = Std.hasHexFloats();
1279  Opts.ImplicitInt = Std.hasImplicitInt();
1280
1281  // OpenCL has some additional defaults.
1282  if (LangStd == LangStandard::lang_opencl) {
1283    Opts.OpenCL = 1;
1284    Opts.AltiVec = 1;
1285    Opts.CXXOperatorNames = 1;
1286    Opts.LaxVectorConversions = 1;
1287  }
1288
1289  // OpenCL and C++ both have bool, true, false keywords.
1290  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1291
1292  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1293  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1294  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1295  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1296  // name, as it doesn't seem a useful distinction.
1297  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1298                                  Opts.GNUMode);
1299
1300  if (Opts.CPlusPlus)
1301    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1302
1303  if (Args.hasArg(OPT_fobjc_gc_only))
1304    Opts.setGCMode(LangOptions::GCOnly);
1305  else if (Args.hasArg(OPT_fobjc_gc))
1306    Opts.setGCMode(LangOptions::HybridGC);
1307
1308  if (Args.hasArg(OPT_print_ivar_layout))
1309    Opts.ObjCGCBitmapPrint = 1;
1310  if (Args.hasArg(OPT_fno_constant_cfstrings))
1311    Opts.NoConstantCFStrings = 1;
1312
1313  if (Args.hasArg(OPT_faltivec))
1314    Opts.AltiVec = 1;
1315
1316  if (Args.hasArg(OPT_pthread))
1317    Opts.POSIXThreads = 1;
1318
1319  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1320  if (Vis == "default")
1321    Opts.setVisibilityMode(DefaultVisibility);
1322  else if (Vis == "hidden")
1323    Opts.setVisibilityMode(HiddenVisibility);
1324  else if (Vis == "protected")
1325    Opts.setVisibilityMode(ProtectedVisibility);
1326  else
1327    Diags.Report(diag::err_drv_invalid_value)
1328      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1329
1330  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1331    Opts.InlineVisibilityHidden = 1;
1332
1333  if (Args.hasArg(OPT_ftrapv)) {
1334    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1335    // Set the handler, if one is specified.
1336    Opts.OverflowHandler =
1337        Args.getLastArgValue(OPT_ftrapv_handler);
1338  }
1339  else if (Args.hasArg(OPT_fwrapv))
1340    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1341
1342  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1343  // is specified, or -std is set to a conforming mode.
1344  Opts.Trigraphs = !Opts.GNUMode;
1345  if (Args.hasArg(OPT_trigraphs))
1346    Opts.Trigraphs = 1;
1347
1348  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1349                                   OPT_fno_dollars_in_identifiers,
1350                                   !Opts.AsmPreprocessor);
1351  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1352  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1353  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1354  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1355  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1356  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1357  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1358    Opts.LaxVectorConversions = 0;
1359  if (Args.hasArg(OPT_fno_threadsafe_statics))
1360    Opts.ThreadsafeStatics = 0;
1361  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1362  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1363  Opts.Blocks = Args.hasArg(OPT_fblocks);
1364  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1365  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1366  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1367  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1368  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1369  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1370  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1371  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1372  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1373  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1374  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1375                                               Diags);
1376  Opts.ArgumentLargerThan = Args.getLastArgIntValue(OPT_Wargument_larger_than,
1377                                                    0, Diags);
1378  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1379  Opts.ObjCConstantStringClass =
1380    Args.getLastArgValue(OPT_fconstant_string_class);
1381  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1382  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1383  if (Opts.ObjCNonFragileABI2)
1384    Opts.ObjCNonFragileABI = true;
1385  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1386  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1387  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1388  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1389  Opts.Static = Args.hasArg(OPT_static_define);
1390  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1391  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1392  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1393  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1394  Opts.OptimizeSize = 0;
1395
1396  // FIXME: Eliminate this dependency.
1397  unsigned Opt =
1398    Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1399  Opts.Optimize = Opt != 0;
1400
1401  // This is the __NO_INLINE__ define, which just depends on things like the
1402  // optimization level and -fno-inline, not actually whether the backend has
1403  // inlining enabled.
1404  //
1405  // FIXME: This is affected by other options (-fno-inline).
1406  Opts.NoInline = !Opt;
1407
1408  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1409  switch (SSP) {
1410  default:
1411    Diags.Report(diag::err_drv_invalid_value)
1412      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1413    break;
1414  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1415  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1416  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1417  }
1418}
1419
1420static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1421                                  FileManager &FileMgr,
1422                                  const FileSystemOptions &FSOpts,
1423                                  Diagnostic &Diags) {
1424  using namespace cc1options;
1425  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1426  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1427  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1428      Opts.TokenCache = A->getValue(Args);
1429  else
1430    Opts.TokenCache = Opts.ImplicitPTHInclude;
1431  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1432  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1433  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1434
1435  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1436  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1437         ie = Args.filtered_end(); it != ie; ++it) {
1438    const Arg *A = *it;
1439    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1440  }
1441
1442  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1443    llvm::StringRef Value(A->getValue(Args));
1444    size_t Comma = Value.find(',');
1445    unsigned Bytes = 0;
1446    unsigned EndOfLine = 0;
1447
1448    if (Comma == llvm::StringRef::npos ||
1449        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1450        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1451      Diags.Report(diag::err_drv_preamble_format);
1452    else {
1453      Opts.PrecompiledPreambleBytes.first = Bytes;
1454      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1455    }
1456  }
1457
1458  // Add macros from the command line.
1459  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1460         ie = Args.filtered_end(); it != ie; ++it) {
1461    if ((*it)->getOption().matches(OPT_D))
1462      Opts.addMacroDef((*it)->getValue(Args));
1463    else
1464      Opts.addMacroUndef((*it)->getValue(Args));
1465  }
1466
1467  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1468
1469  // Add the ordered list of -includes.
1470  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1471                                             OPT_include_pth),
1472         ie = Args.filtered_end(); it != ie; ++it) {
1473    const Arg *A = *it;
1474    // PCH is handled specially, we need to extra the original include path.
1475    if (A->getOption().matches(OPT_include_pch)) {
1476      std::string OriginalFile =
1477        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, FSOpts,
1478                                         Diags);
1479      if (OriginalFile.empty())
1480        continue;
1481
1482      Opts.Includes.push_back(OriginalFile);
1483    } else
1484      Opts.Includes.push_back(A->getValue(Args));
1485  }
1486
1487  // Include 'altivec.h' if -faltivec option present
1488  if (Args.hasArg(OPT_faltivec))
1489    Opts.Includes.push_back("altivec.h");
1490
1491  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1492         ie = Args.filtered_end(); it != ie; ++it) {
1493    const Arg *A = *it;
1494    std::pair<llvm::StringRef,llvm::StringRef> Split =
1495      llvm::StringRef(A->getValue(Args)).split(';');
1496
1497    if (Split.second.empty()) {
1498      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1499      continue;
1500    }
1501
1502    Opts.addRemappedFile(Split.first, Split.second);
1503  }
1504}
1505
1506static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1507                                        ArgList &Args) {
1508  using namespace cc1options;
1509  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1510  Opts.ShowComments = Args.hasArg(OPT_C);
1511  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1512  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1513  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1514  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1515}
1516
1517static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1518  using namespace cc1options;
1519  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1520  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1521  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1522  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1523  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1524  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1525
1526  // Use the host triple if unspecified.
1527  if (Opts.Triple.empty())
1528    Opts.Triple = llvm::sys::getHostTriple();
1529}
1530
1531//
1532
1533void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1534                                        const char* const *ArgBegin,
1535                                        const char* const *ArgEnd,
1536                                        Diagnostic &Diags) {
1537  // Parse the arguments.
1538  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1539  unsigned MissingArgIndex, MissingArgCount;
1540  llvm::OwningPtr<InputArgList> Args(
1541    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1542
1543  // Check for missing argument error.
1544  if (MissingArgCount)
1545    Diags.Report(diag::err_drv_missing_argument)
1546      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1547
1548  // Issue errors on unknown arguments.
1549  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1550         ie = Args->filtered_end(); it != ie; ++it)
1551    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1552
1553  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1554  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1555  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1556  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1557  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1558  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1559  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1560  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1561    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1562  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1563  // PCH file and find the original header name. Remove the need to do that in
1564  // ParsePreprocessorArgs and remove the FileManager & FileSystemOptions
1565  // parameters from the function and the "FileManager.h" #include.
1566  FileManager FileMgr;
1567  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args,
1568                        FileMgr, Res.getFileSystemOpts(), Diags);
1569  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1570  ParseTargetArgs(Res.getTargetOpts(), *Args);
1571}
1572